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United States Patent | 5,015,268 |
Ho | May 14, 1991 |
A membrane is provided for separating aliphatically unsaturated hydrocarbons from hydrocarbon mixtures, the membrane comprising a hydrophilic polymer which contains metals capable of complexing with aliphatically unsaturated hydrocarbons.
Inventors: | Ho; W. S. Winston (Annandale, NJ) |
Assignee: | Exxon Research and Engineering Co. (Florham Park, NJ) |
Appl. No.: | 409999 |
Filed: | September 19, 1989 |
Current U.S. Class: | 95/50; 96/4; 96/14; 585/818 |
Intern'l Class: | B01D 053/04; B01D 071/38 |
Field of Search: | 55/16,158 210/640 585/818,819 |
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Foreign Patent Documents | |||
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J. Chatt, "Cationic Polymerization and Related Complexes-The General Chemistry of Olefin Complexes with Metallic Salts", pp. 40-56, Proc. Conf. Univ. Coll., North Saffordshire, England, 1952. Ward, III et al., Science, 156, 1481 (1967). Way et al., J. Mem. Sci., 12, 239 (1982). Way et al., Aiche J. 33, 480 (1987). Way et al., SRI International, Research Brief (May 15, 1987). |
TABLE __________________________________________________________________________ Separation Factor with Respect to Permeability (.times. 10.sup.-8 cc (STP) n-Butane cm/sec cm.sup.2 cm Hg) 1-butene isobutylene trans-2-butene 1-butene isobutylene trans-2-butene __________________________________________________________________________ Membrane A 105 90 60 4 3.3 2.2 Membrane B 110 90 50 4.9 3.7 2.2 __________________________________________________________________________